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https://www.readbyqxmd.com/read/28295708/seasonal-alterations-in-the-daily-rhythms-in-hypothalamic-expression-of-genes-involved-in-the-photoperiodic-transduction-and-neurosteroid-dependent-processes-in-migratory-blackheaded-buntings
#1
Ila Mishra, Devraj Singh, Vinod Kumar
This study investigated seasonal alterations in the daily rhythms of hypothalamic expression of genes involved in the photoperiodic regulation of annual cycles in birds. We measured 4-hourly mRNA expression of genes involved in the photoperiodic transduction (OPN5, EYA3, CGA, TSHβ, DIO2, DIO3) and neurosteroid-dependent processes (AR, CYP19, ERα, ERβ) in the hypothalamus of migratory blackheaded buntings photoinduced with photosensitive, photostimulated (early and late stimulated) and photorefractory seasonal states...
March 14, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28254568/extra-hypothalamic-brain-clocks-in-songbirds-photoperiodic-state-dependent-clock-gene-oscillations-in-night-migratory-blackheaded-buntings-emberiza-melanocephala
#2
Devraj Singh, Vinod Kumar
The avian circadian pacemaker system is comprised of independent clocks in the retina, pineal and hypothalamus, as shown by daily and circadian oscillations of core clock genes (Per2, Cry1, Bmal1 and Clock) in several birds including migratory blackheaded buntings (Emberiza melanocephala). This study investigated the extra-hypothalamic brain circadian clocks in blackheaded buntings, and measured Per2, Cry1, Cry2, Bmal1 and Clock mRNA expressions at 4h intervals over 24h beginning 1h after light-on in the left and right telencephalon, optic tectum and cerebellum, the brain regions involved in several physiological and cognitive functions...
February 24, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28245642/flight-synchrony-among-the-major-moth-pests-of-cranberries-in-the-upper-midwest-usa
#3
Shawn A Steffan, Merritt E Singleton, Jayne Sojka, Elissa M Chasen, Annie E Deutsch, Juan E Zalapa, Christelle Guédot
The cranberry fruitworm (Acrobasis vaccinii Riley), sparganothis fruitworm (Sparganothis sulfureana Clemens), and blackheaded fireworm (Rhopobota naevana Hübner) are historically significant pests of cranberries (Vaccinium macrocarpon Aiton) in the Upper Midwest (Wisconsin), USA. Their respective natural histories are well documented but correlations between developmental benchmarks (e.g., larval eclosion) and degree-day accruals are not yet known. Treatment timings are critical to the optimization of any given control tactic, and degree-day accrual facilitates optimization by quantifying the developmental status of pest populations...
February 26, 2017: Insects
https://www.readbyqxmd.com/read/27902913/regulatory-considerations-for-the-approval-of-drugs-against-histomoniasis-blackhead-disease-in-turkeys-chickens-and-game-birds-in-the-united-states
#4
Prajwal R Regmi, Ashley L Shaw, Laura L Hungerford, Janis R Messenheimer, Tong Zhou, Padmakumar Pillai, Amy Omer, Jeffrey M Gilbert
Histomoniasis, commonly referred to as blackhead disease, is a serious threat to the turkey and game bird industries worldwide, and it is having an increasingly negative impact on the chicken industry as well. The Food and Drug Administration's (FDA) Center for Veterinary Medicine (CVM), charged with the approval and regulation of new animal drugs in the United States, understands the rising need for the availability of therapeutic options against histomoniasis. CVM has actively engaged in discussions with the poultry industry, academic institutions, and animal health companies regarding the current status of histomoniasis in the United States and varied success of past and current management, prophylactic, and therapeutic interventions that have been used against the disease...
December 2016: Avian Diseases
https://www.readbyqxmd.com/read/27670126/light-therapies-for-acne
#5
REVIEW
Jelena Barbaric, Rachel Abbott, Pawel Posadzki, Mate Car, Laura H Gunn, Alison M Layton, Azeem Majeed, Josip Car
BACKGROUND: Acne vulgaris is a very common skin problem that presents with blackheads, whiteheads, and inflamed spots. It frequently results in physical scarring and may cause psychological distress. The use of oral and topical treatments can be limited in some people due to ineffectiveness, inconvenience, poor tolerability or side-effects. Some studies have suggested promising results for light therapies. OBJECTIVES: To explore the effects of light treatment of different wavelengths for acne...
September 27, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27439640/blackheads-whiteheads-femoral-head
#6
(no author information available yet)
No abstract text is available yet for this article.
July 2016: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/27439638/blackheads-whiteheads-femoral-head
#7
Joshua Osowicki, Ke Juin Wong, Leo Donnan, Penelope A Bryant
No abstract text is available yet for this article.
July 2016: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/27179427/perfluoroalkylated-substances-in-edible-livers-of-farm-animals-including-depuration-behaviour-in-young-sheep-fed-with-contaminated-grass
#8
Effrosyni Zafeiraki, Irene Vassiliadou, Danae Costopoulou, Leondios Leondiadis, Helmut A Schafft, Ron L A P Hoogenboom, Stefan P J van Leeuwen
Perfluoroalkylated substances (PFASs) present a potential health risk for consumers. In animals these compounds are known to accumulate in livers. In order to determine potential PFASs contamination in commercially available livers, samples from farmed sheep, horses, cows, pigs and chicken were collected from the Dutch market. PFOS was the only detectable PFAS and its concentration was higher in free ranging animals like cows and sheep. The detected levels of PFOS in the liver samples were very low (up to 4...
August 2016: Chemosphere
https://www.readbyqxmd.com/read/27081249/comedones-induced-by-vascular-laser-therapy
#9
Gulsen Tukenmez Demirci, Ayse Tulin Mansur, Ayse Tulin Gulec
A 21-year-old female presented with acne-like blackheads on brownish areas located on the cheek. She had been treated with neodymium-doped yttrium aluminium garnet (Nd-YAG) laser (1071 nm), 160 j/cm(2), three months ago for erythema and telangiectasia of her face. Afterwards, she developed atrophic, slightly depressed, hyperpigmented, 3-4 mm scars with superimposed tiny comedones within the treated areas. Topical treatment with tretinoin 0.05% cream on alternate days, and Sun Protection Factor (SPF) 50 sunscreen daily were commenced...
January 2016: Journal of Cutaneous and Aesthetic Surgery
https://www.readbyqxmd.com/read/26660516/chondrocyte-survival-in-osteochondral-transplant-cylinders-depends-on-the-harvesting-technique
#10
Benedikt Hafke, Maximilian Petri, Eduardo Suero, Claudia Neunaber, Sebastian Kwisda, Christian Krettek, Michael Jagodzinski, Mohamed Omar
PURPOSE: In autologous osteochondral transplantation, the edges of the harvested plug are particularly susceptible to mechanical or thermal damage to the chondrocytes. We hypothesised that the applied harvesting device has an impact on chondrocyte vitality. METHODS: Both knees of five blackhead sheep (ten knees) underwent open osteochondral plug harvesting with three different circular harvesting devices (osteoarticular transfer system harvester [OATS; diameter 8 mm; Arthrex, Munich, Germany], diamond cutter [DC; diameter 8...
July 2016: International Orthopaedics
https://www.readbyqxmd.com/read/26591388/grazing-behaviour-and-dry-matter-intake-of-llamas-lama-glama-and-german-black-head-mutton-sheep-ovis-orientalis-forma-aries-under-central-european-conditions
#11
Anna Maria Stölzl, Christian Lambertz, Matthias Gauly
The aim of the present study was to assess the behaviour of llamas (Lama glama) and German blackhead mutton sheep (Ovis orientalis forma aries) when kept under Central European grazing conditions. In total, six adult female sheep and six adult female llamas were observed by direct observation during one week, in which each group was observed for a total time of 24 h. The animals were kept on the same pasture, but the species were raised in separate plots. Forage height before and after the experimental period were determined using a rising plate meter to calculate the average daily dry matter intake (DMI)...
September 2015: Berliner und Münchener Tierärztliche Wochenschrift
https://www.readbyqxmd.com/read/26212527/evaluation-of-anti-acne-properties-of-phloretin-in-vitro-and-in-vivo
#12
H Kum, K-B Roh, S Shin, K Jung, D Park, E Jung
OBJECTIVE: This study aimed to investigate the anti-acne properties of phloretin in vitro and in vivo. METHODS: Anti-microbial activity against Propionibacterium acnes (P. acnes), Propionibacterium granulosum (P. granulosum) and Staphylococcus epidermidis (S. epidermidis) were observed by the minimum inhibitory concentration (MIC) and disc diffusion methods. The anti-inflammatory effects were studied in HaCaT cells based on P. acnes-induced inflammatory mediators, including PGE2 and COX-2, examined through enzyme-linked immunosorbent assay (ELISA) and luciferase reporter gene assay...
February 2016: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/26032934/the-effect-of-physically-applied-alpha-hydroxyl-acids-on-the-skin-pore-and-comedone
#13
RANDOMIZED CONTROLLED TRIAL
S J Kim, J H Baek, J S Koh, M I Bae, S J Lee, M K Shin
OBJECTIVE: Alpha hydroxy acids (AHA) have been recognized as commonly used therapy for acne. Our studies examined whether an additional effect of physical treatment using chemical peeling combined with negative pressure and compared with AHA treatment only occurs in acne-prone subjects. METHODS: The chemical peeling agent used 4% of an AHA solution (mixture of 1000 mL of carbonated water, 20 mL of glycolic acid and 20 mL of lactic acid). All subjects' faces were randomly divided into test and control groups...
October 2015: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/25976057/histomonosis-an-existing-problem-in-chicken-flocks-in-poland
#14
Beata Dolka, Artur Żbikowski, Izabella Dolka, Piotr Szeleszczuk
Histomonosis (histomoniasis, blackhead), beside coccidiosis, belongs to the most important parasitic protozoan diseases in poultry. So far Histomonas meleagridis infections with varied mortality rates have been mainly diagnosed in young turkeys. Recently an increasing number of cases have been reported in chicken flocks in Europe resulting in economic losses. It is thought that this situation is predominantly caused by a complete withdrawal of the effective antihistomonals in the EU. Authors listed the selected outbreaks of histomonosis in 10 chicken flocks originated from different farms of 4 regions in Poland: 8 broiler breeder flocks (at mean age of 33 weeks) and 2 commercial layers flocks (at mean age of 38 weeks)...
September 2015: Veterinary Research Communications
https://www.readbyqxmd.com/read/25764497/nocturnal-melatonin-levels-decode-daily-light-environment-and-reflect-seasonal-states-in-night-migratory-blackheaded-bunting-emberiza-melanocephala
#15
Shalie Malik, Jyoti Singh, Amit Kumar Trivedi, Sudhi Singh, Sangeeta Rani, Vinod Kumar
We proposed two perhaps overlapping hypotheses. Hypothesis 1 examined whether daily light information was transduced by a change in the pattern of daily melatonin secretion. Hypothesis 2 tested whether the melatonin amplitude peak was contingent upon seasonal states. To test these hypotheses, we performed three experiments on night migratory blackheaded buntings (Emberiza melanocephala). The first two experiments measured plasma melatonin levels in buntings exposed to light-dark (LD) cycles, with white and/or blue (450 nm) and red (640 nm) light periods differing by about 10-12 fold in the level of illuminance...
May 2015: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/25636903/adaptation-of-oxidative-phosphorylation-to-photoperiod-induced-seasonal-metabolic-states-in-migratory-songbirds
#16
Amit Kumar Trivedi, Shalie Malik, Sangeeta Rani, Vinod Kumar
Eukaryotic cells produce chemical energy in the form of ATP by oxidative phosphorylation of metabolic fuels via a series of enzyme mediated biochemical reactions. We propose that the rates of these reactions are altered, as per energy needs of the seasonal metabolic states in avian migrants. To investigate this, blackheaded buntings were photoperiodically induced with non-migratory, premigratory, migratory and post-migratory phenotypes. High plasma levels of free fatty acids, citrate (an intermediate that begins the TCA cycle) and malate dehydrogenase (mdh, an enzyme involved at the end of the TCA cycle) confirmed increased availability of metabolic reserves and substrates to the TCA cycle during the premigratory and migratory states, respectively...
June 2015: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/25610349/acne-in-hirsute-women
#17
Besa Gacaferri Lumezi, Hatixhe Latifi Pupovci, Violeta Lokaj Berisha, Aferdita Uka Goçi, Antigona Gerqari
INTRODUCTION: Acne and hirsutism are common manifestations of hyperandrogenism. AIM: To investigate whether or not acne is present in women with hirsutism, associated with different clinical, endocrine and ultrasonographic features. MATERIAL AND METHODS: The prospective study included 135 women with hirsutism, aged 14-46 years. We measured the levels of hormones with radioimmunoassay/immunoradiometric assay methods. RESULTS: Acne were present in 63 (47...
December 2014: Postȩpy Dermatologii i Alergologii
https://www.readbyqxmd.com/read/25597924/complementary-therapies-for-acne-vulgaris
#18
REVIEW
Huijuan Cao, Guoyan Yang, Yuyi Wang, Jian Ping Liu, Caroline A Smith, Hui Luo, Yueming Liu
BACKGROUND: Acne is a chronic skin disease characterised by inflamed spots and blackheads on the face, neck, back, and chest. Cysts and scarring can also occur, especially in more severe disease. People with acne often turn to complementary and alternative medicine (CAM), such as herbal medicine, acupuncture, and dietary modifications, because of their concerns about the adverse effects of conventional medicines. However, evidence for CAM therapies has not been systematically assessed...
January 19, 2015: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/25536387/role-of-light-wavelengths-in-synchronization-of-circadian-physiology-in-songbirds
#19
G Yadav, S Malik, S Rani, V Kumar
This study investigated whether at identical duration and equal energy level birds presented with short (450nm; blue, B) and long (640nm; red, R) light wavelengths would differentially interpret them and exhibit wavelength-dependent circadian behavioral and physiological responses, despite the difference in their breeding latitudes. Temperate migratory blackheaded buntings (Emberiza melanocephala) and subtropical non-migratory Indian weaverbirds (Ploceus philippinus) initially entrained to 12h light:12h darkness (12L:12D; L=0...
March 1, 2015: Physiology & Behavior
https://www.readbyqxmd.com/read/25479811/accumulation-of-polychlorinated-dibenzo-p-dioxins-dibenzofurans-and-biphenyls-in-livers-of-young-sheep
#20
Ron L A P Hoogenboom, Marie Luise Stark, Markus Spolders, Marco J Zeilmaker, Wim A Traag, Guillaume Ten Dam, Helmut A Schafft
A major part of sheep livers contains levels of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) above the former but to some extent also the new maximum levels (MLs) in the EU. In order to investigate the relationship between the intake of these contaminants and their accumulation in livers, kidney fat and meat, young blackhead sheep were fed with grass pellets containing PCDD/Fs at 2.5 times the maximum level. Levels of PCDD/Fs in livers were already quite high at the start of the exposure but increased 3-fold within 56d, exceeding the new product based MLs...
March 2015: Chemosphere
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